Living things that are very different but all share 6 of the same characteristics
An organism made up of one cell (ex: bacteria)
An organism made up of more than one cell (ex: me)
Name the 6 characteristics of life
Made of cells Made of similar chemicals Uses energy Grows and develops Responds to the world around them Reproduces
Name the 4 basic needs of life
Need water Needs energy Needs living space Needs stable internal conditions
The process of change during life to become a more complex organism
A change in an organism's surroundings that causes the organism to react
An action or change in behavior
To produce offspring that are similar to the parents
The process of becoming larger
The mistaken idea that living organisms rise from non-living objects
Organisms that get their energy from the sun
Organisms that get their energy from food
Maintaining stable internal conditions
A scientist who helped disprove spontaneous generation
The scientist who ultimately disproved spontaneous generation
State the 3 parts of the cell theory
1) All living things come from cells 2) All living things are made of cells 3) Cells are the basic unit of structure in all living things
Who was Robert Hooke?
•English scientist and inventor •One of the first people to observe cells •1663 he observed the cells of a slice of cork through a compound microscope he built himself •Hooke called them cells because they reminded him of tiny rectangular rooms
Who was Anton van Leuwenhoek?
•Amateur scientist who made his own lenses and constructed simple microscopes •First person to spot tiny single-celled organisms that we call bacteria. He first noticed these organisms on teeth scrapings. •Called them animacules.
Who were Schleiden and Shwan?
•Shleiden and Schwann’s observations that all plants were made of cells and all animals were made of cells led to: “All living things are made of cells.”
Who was Rudolph Virchow?
•Virchow proposed that new cells are formed ONLY from cells that already exist. This led to: “All cells come from cells.”
Basic unit of structure and function in all living things
Body of a microscope
Support the eyepiece
Holds objective lenses, magnifies by low, medium, and high power.
High- 40x Medium- 10x Low- 4x
Holds the slide in place
Wheel under stage, adjusts how much light is allowed
Located under stage and diaphragm, source of light
The lens looked through, magnifies specimen 10 X
Allows light through to brighten image of specimen